Apparatus for promoting combustion.



No. 019,400. PATENTED MAY 1, 1000.

0.11.13A11Ns.

APPARATUS P011 011011011110 GOMBUSTION.

APPLIUATION FILED JULY 20, 1905.

By/(flue v'UivrrED srA'rEs PATENT OFFICE. l

GEORGE'R. BARNS, OF BUFFALO, NEW YORK.

APPARATUSFQR PRoMoTlNG coMBusTloN.

No. 819,400. n

Specification of Letters Patent.

Patented May i, 190e.

Application filed Jiy 20,1905. serial No. 270.479.

cation.

This invention relates to a device for promoting combustion in furnaces by induction of air into the combustion-chamber heated in transit thereto.

The objects of my invention are to provide a sim le, inexpensive, and effective device of this cliaracter which can be conveniently and quickly applied to any furnace, to so construct the device that it can be easilyremoved from one furnace and ap lied to an other furnace, and to provide a evice whic can be attached to the fire-door of the furnace, thus avoiding the boring of holes in the wall of the latter.

Other objects are to provide the devicey With a perforated discharge end and to soat-` tach the same to the fire-door that the said dischar e end is held directly over the center of the re-bars, whereby the device is rendered equally effective with a small iire as with a large fire; to provide means whereby the device automaticall assumes its normal position when the fire-dbox'. is closed, and to otherwise improve on air-mduction devices now in use.

To these ends ythe invention consists in the construction, arrangement, land combinationy of parts t'o be hereinafter described, and more particularly pointed out in the subjoined claims. v E In the drawings, Figure 1 is a vertical section through a portion of a furnace, showin my invention applied to the frefdoor wit the discharge end of the same projecting into the combustion-chamber. Fig. 2 is a horizontal section, taken on line 2 2, Fig. 1,'s-how ing the re=door closed and the device inits normal position.` Fig. 3 is a similar section showing the inwardly-projecting portion of the conduit in contact with the wall of the furnace andthe re-door o n elevation of the fire-door etached, showing my improved device attached thereto. Fig.

5 is an enlarged vertical section taken on line;

5 5', Fig. 1. Fio. 6 is a pers ective view of a portion of the' air-conduit, t e portion of the v5 5 swivel-section shown being partly elevated en. Fig. 4isan on the fixed section to show the reduced upper end of the latter. Fig. 7 yis a erspective view of the vertical portion of t e air-conduit, showing the swivel portion turned on the fixed portion, which position it assumes when the fire-door is opened.

Referring to the drawings letters of reference refer to several figures. j

The letter A designates the wall of the furlike parts in the nace, B the combustion-chamber, and C the A `fire-door, to which my improved device is attached.

Ordinaril fire-doors for furnaces are provided with ampers c, by means of which the chamber to check the fire. In my invention this damper is utilized'to promote combustion, and this is done by using it for the induction of air to the combustion-chamber,

which in transit thereto is heated, and when delivered to the fire' in a series of jets prolnotes combustion and greatly intensifies the eat. v

Fire-doors of ordinary construction have av in detail, like.

ledge d, against which a slotted or a perfo...

rated late is held by four bolts E, passing throng bolt-holes e at the four cornersof- My device is similarly applied" fire-door. land cdmprises ay late F, held against the ledge d by the bo tsA E, assing throughthe bolt-holes e in the fire-dJ bolt-holes the late, throu h which latter the threaded en s of the bo ts roject and have nuts e applied thereto, w ereby said plate is firmly he d, and an air-conduit G, secured to the plate F and terminating, preferably, inthe center-of the combustion-chamber. In this `manner the yre-door is converted into an air-heating chamber, (designated b the letter G into which the proper flowl o air can 4be induced by regulating the damper c. The plate F forms the inner `wall of the air-chamber and isl referably made of iron in order to radiatev t e heat to the air Within the chamber, it being of course subjected to thev heat in the combustionchamber.

openings or oorand coinciding IOO the plate F is provided with air '05 outlets f, which are connected byta horizontallydisposed tube H, bolted affixed to said plateland having connected therewith centrally between its ends a vertical tube h, reduced inv diameter'at its upper or otherwise 7o cold air is introduced to the combustionof the swivel-section extends into the coinclosing the fire-door the fixed section J necesend to forni a shoulder h', provided with a V- shaped notch or otherwise formed to provide an incline l, as shown in Figs. 4, 6, and 7. The horizontal tube Il and the vertical tube h form the ixed section J of the air-condiut.

said end with a series )l"peil` )r:1.tir iis, through 4 which the heated air passes and is directed against the lire in a series ol Jets.

Normally thel inwardly-projecting portion bustion-chamber in a line perpendicular to the lire-door, so as to bring the'perforations at the inner end thereo'lover the ire, and therefore when the lire-door is being opened said swivel-section is carried with the 'same and comes incontact with the sides of the iire-door opening, as shown in Fig. 3,l which checks its further swinging movement with the door and compels thel said swivel-section to turn on the upper reduced end of the fixed section. During this action said swivel-section is raised on the i'ixed section by reason of its inclined lower end riding up the incline on the shoulder of the vlixed section. This permits the lire-door to be opened to any extent desired without offering the least obstruction, and as the inwardly-extending portion of said swivel-section lies in a plane slightly below the upper-edge of the door the iire-door opening is but slightly restricted and no inconvenience in supplying the combustionchamber with coal is produced thereby. On

sarily moves with the door and allows the swivel-section to turn and the inclined lower end thereof to ride down'the inclined shoulder on the ixed section until the inwardlyprojecting portion of the swivel-section is again perpendicular to the Vlire-door, which osition it assumes when the incline on the ower end of the swivel-section is in proper and corresponding relation to the incline on the fixed section, after which said swivel-section is moved bodily with the door, while retaining `its perpendicular relation to the same.

From the foregoing it is apparent that abto apply my improved device thereto, and, furthermore, experienced labor is not necessary in applying the device, since it requires the mere substitution of the plate F and parts supported thereon for the slotted or perforated plate, as the case may be, which ordinarily forms part oi' the fire-door.

This invention is susceptible to many changes inform, arrangement, and construction without departing from the spirit of my invention or sacrificing any advantages thereof.

Having thus described my invention, what I claim is- I 1. In an apparatus for promoting combustion, the combination with a combustionchamber having an opening in one of its walls, of a door closing said opening and having an air-chamber therein and an air-inlet for said chamber, and an air-conduit comprising a fixed section secured to said door and a movable section carried by said fixed section and projecting into the coinbustion-chaniber to direct the air to the fuel within said combustion-chamber.

'2. In an apparatus for promoting combustion, the combination with a combustionchamber having an opening in one of its walls, of a door hinged to said wall to close said opening and having an air-chamber and an air-inlet for said chamber, and an air-conduit comprising a iixed section secured to said door and a swivel-section mounted on said yfixed section and projecting into the combustion-chamber to direct the air against the fuel therein.

3. In an apparatus for promoting combustion, the combination with a combustion-4.

chamber having an opening in one ofv its walls, a door hinged to said wall to close said opening and having an air-chamber provided with an air-inlet and an air-outlet, 'an airconduit comprising a ixed section secured to said door in communication with the cham- IOO ber therein, and a movable section carried by said iixed section and having an inwardlyprojecting portion lying normally perpendicular to the door, said movable sectionon opening the door being swung out of its normal position by contact with the wallof the combustion-chamber, and means to cause 'said movable section to automatically return to its normal position when closing the door.

4. In an apparatus for promoting combustion, the combination with a combustion- .chamber having an opening in one of its walls, a'door hinged to said wall to close said opening and having an air-chamber provided with an air-inlet and two air-outlets, an airconduit comprising a ixed section having a horizontal portion connecting Said air-outlets and a vertical portion extendin upward from the center of said horizonta portion, and a movable section carried on said iixed section and projecting into the combustionchamben `5. In an apparatus ior promoting combus- IZO.

and -a vertical portion extending upward from the center of said horizontal portion, a

' movable section normally held perpendicular to said door and on opening the latter being swung out of its normal position by contact with the wall of the combustion-chamber, and means tol cause the movable section to -automatically return to its normal position when closing said door.

6. In an apparatus for promoting combustion, the combination with a combustionchamber having an opening in one of its Walls, a door hinged to said Wall to vclose said opening and having an air-chamber provided with an air-inlet and two air-outlets, an airconduit comprising a xed section having a l horizontal portion connecting said air-outlets and a vertical ortion extending upward from the center el) the horizontal ortion and having a reduced u per end to crm an inclined shoulder, an a movable section having a vertical portion fitting onto the reduced upper end of the xed section and provided with an inclined end coplerating with said v inclined shoulder and a orizontal ortion extending into the combustion-cham er and having a series of openings to direct jets of air against the fuel.

7. A n apparatus for promoting combustion, comprisin a plate adapted to be secured to a reoor to form an air-chamber, an air-conduit axed to said plate and extending therefrom into the combustionchamber, said conduit communicating with the air-chamber formed in the door and having a series of air-o enin s at its free end to direct jets of air to t e fue .1

8. An apparatus4 for promoting combustion comprising a hollow fire-door to form an the fixed section and rovided wit signature in the air-chamber andhaving an air-inlet and an air-outlet, an air-conduit comprising a vertical y.ortion and a horizontal portlon lyln 1n a p ane slightly below the top of the eclines, and said oscillatin section avin av vertical tube fitting the re uced upper en of acomplementar inclined en for coaction with the depressionin the shoulder of the fixed section.

10. In an apparatus for promoting combustion, the combination with the usual firedoor having an air-o ening and a damper for said opening, of a p ate secured to said door and separated from the front wall thereof to form an air-heating chamber, and an air-conduit leading from said chamber into the combustion-chamber to direct the heated air against the fuel.

In testimony Whereof'I have alixed my presence of two subscribing Witnesses. L

` GEORGE R. BARNS. Witnesses: MAY F. SEwERT,

EMIL NEUHART.

sectlon, said fixed section tube reduced at itsupper romoting combus- 

